Graphic Path type inconsistencies.

[alberto-acevedo]

There 3 path types : Rhumb (constant bearing), great circle (geodesic or shortest distance), and linear.

Cesium and WorldWind are defaulting path type to great circle. The SEC renderer is using rhumb. I checked and the EMP core geo libraries used for calculations are using great circle. So the only component using rhumb is the SEC renderer. There must be an option in the core and API to set the path type for all engines. What path types should be the default?